<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="./vue.js"></script>
  </head>
  <body>
    <div class="app">
      <ul>
        <li v-for="item in list">
          <span>{{item.num}}</span>
          <button @click="list=list.filter(ele => ele.id!==item.id )">
            删除
          </button>
        </li>
      </ul>
      <button @click="create">生成</button>
    </div>
    <script>
      const app = new Vue({
        el: ".app",
        data: {
          list: [
            { id: 1, num: 1 },
            { id: 2, num: 5 },
            { id: 3, num: 3 },
          ],
        },
        methods: {
          create() {
            this.list.push({
              id: Date.now(),
              num: Math.floor(Math.random() * 20),
            });
          },
        },
      });
    </script>
  </body>
</html>
